In a recent study, the Northwestern University psychologist Galen V. Bodenhausen linked consumption with aberrant, antisocial behavior. Professor Bodenhausen found that “Irrespective of personality, in situations that activate a consumer mind-set, people show the same sorts of problematic patterns in well-being, including negative affect and social disengagement.” Though American consumer activity has increased substantially since the 1950s, happiness levels have flat-lined.